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salantis [7]
3 years ago
14

How do you solve cos x- sin^2x- 1

Mathematics
1 answer:
jekas [21]3 years ago
6 0
Sin(A + B) = sin(2x + x) = 1/2 
<span>sin(3x) = 1/2 </span>
<span>3x = sin^(-1)[1/2] </span>
<span>3x = pi/6 , 5pi/6 ...etc </span>
<span>x = pi/18 , 5pi/18 ...etc


hope that helped</span>
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3xy^3+5-x-2xy^3=xy^3+11
Viktor [21]

Answer:  x=-6

Sorry, I am only able to find the x :(

Step-by-step explanation:

 Step 1: Add -xy^3 to both sides.

xy^3-x+5+-xy^3=xy^3=xy^3+11+-xy^3

-x+5=11

Step 2: Add -5 to both sides.

-x+5+-5=11+-5\\-x=6

Step 3: Divide both sides by -1.

\frac{-x}{-1} =\frac{6}{-1}

<h2><u></u>x=-6<u></u></h2>

8 0
3 years ago
Read 2 more answers
What are the x-intercept and vertex of this quadratic function? Write each feature as an ordered pair: (a,b). The x-intercept of
Allisa [31]

The x-intercept of the function g(x) = -5(x - 3)^2 is (3, 0) and the vertex of the function g(x) = -5(x - 3)^2 is (3, 0)

<h3>How to determine the x-intercept?</h3>

The function is given as:

g(x) = -5(x - 3)^2

Set g(x) to 0, to determine the x-intercept.

-5(x - 3)^2 = 0

Divide through by -5

(x - 3)^2 = 0

Take the square root of both sides

x - 3 = 0

Add 3 to both sides

x = 3

Hence, the x-intercept of the function g(x) = -5(x - 3)^2 is (3, 0)

<h3>How to determine the vertex?</h3>

The function is given as:

g(x) = -5(x - 3)^2

A quadratic function is represented as:

g(x) = a(x - h)^2 + k

Where, the vertex is

Vertex = (h, k)

By comparing g(x) = a(x - h)^2 + k and g(x) = -5(x - 3)^2, we have

(h, k) = (3, 0)

Hence, the vertex of the function g(x) = -5(x - 3)^2 is (3, 0)

Read more about x-intercept and vertex at

brainly.com/question/1305604

#SPJ1

5 0
2 years ago
HELP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
antoniya [11.8K]

Answer: See explanation

Step-by-step explanation:

1. Step 1: Add up all the numbers.

12 + 15 + 10 + 15 + 11 + 12 + 15 = 90

Step 2: Count how many numbers there are.

There are 7 numbers

Step 3: Divide the sum of the numbers by amount of numbers.

90 ÷ 7 = 12.85

12.85 ≈ 12.9

Mean = 12.9 in tenth place or 13 in whole place

2. The mode is the number that appears the most

15 appears 3 times.

3. 38 / +38

4. 1 week = 7 days

7 × 2 = 14

9 weeks = 9 × 7 = 63

63 × 3 = 189

189 + 14 = 203

203 miles in all

5. Area of 1st rectangle: b × h

4 × 14 = 56

Area of 2nd rectangle: b × h

4 × 14 = 56

56 + 56 = 112

Area of polygon = 112

Hope this helps!

8 0
3 years ago
Read 2 more answers
Choose the two numbers from the box to complete
gogolik [260]

Answer:

8 and 1

Step-by-step explanation:

8-1 =7

8 0
4 years ago
Read 2 more answers
pls help me. If the polygon is translated 2 units down and 4 units left, what will the coordinates of the new image be? Use prim
AnnyKZ [126]

Answer:

Below

Step-by-step explanation:

A'(-3,3)

B'(-4,1)

C'(2,-1)

D'(1,3)

5 0
3 years ago
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